A1 = [1.00000000, 2.00000000 
    4.00000000, 3.00000000 
    5.00000000, 5.00000000 
    7.00000000, 1.00000000];
[U1, S1, V1] = svd(A1, "econ");

A2 = [1.00000000, 2.00000000, 4.00000000
    3.00000000, 5.00000000, 5.00000000
    7.00000000, 1.00000000, 2.00000000];
[U2, S2, V2] = svd(A2, "econ");

A3 = [1.00000000, 2.00000000, 4.00000000, 3.00000000
    5.00000000, 5.00000000, 7.00000000, 1.00000000];
[U3, S3, V3] = svd(A3, "econ");
